Substitute chars on Java 1.4 InputStream

Question

I have an InputStream that is returning, for example:

<?xml version='1.0' ?><env:Envelope xmlns:env="http://schemas.xmlsoap.org/soap/envelope/"><bbs:rule xmlns:bbs="http://com.foo/bbs">

I then pass the stream to a method that return a byte array. I'd like to substitute "com.foo" with something else, like "org.bar" before I pass to the byte[] method.

What is a good way to do that?

Answer 1

If you have a bytearray you can transform it into a String. Pay attention to the encoding, in the example I use utf-8. I think this is a simple way to do that:

String newString = new String(byteArray, "utf-8");
newString = newString.replace("com.foo", "org.bar");
return newString.getBytes("utf-8");

Answer 2

One way is to wrap your InputStream in your own FilterInputStream subclass that does the transformation on the fly. It will have to be a look-ahead stream that checks every "c" character to see if it is followed by "om.foo" and if so make the substitution. You'll probably have to override just the read() method.